Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang cong » dung cong
van thanh » ban thanh, van tuan
thanh tap » thanh lap, thanh tai, thanh tay
toc hieu » toc thieu, doc hieu, hoc thieu
tranh va » tranh van, trang va, trinh va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - canh tranh va ((nhung cong) or (dang cong)) van thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh tranh va ((nhung cong) OR (dang cong)) van thanh tap.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - canh tranh va ((nhung cong) or (dang cong)) van thanh tap*.